Mental Math Worksheet
Recommended for 1st Grade — 5th Grade
Mental Math Worksheet
Name: ____________________Date: ____________
Instructions: Using mental strategies like making ten, doubling, and compensation to compute quickly.
20 problems
1 × 10 = ______
9 × 10 = ______
67 − 10 = ______
81 − 10 = ______
89 − 10 = ______
21 + 20 = ______
81 + 20 = ______
73 − 10 = ______
87 + 20 = ______
88 + 20 = ______
3 × 10 = ______
30 + 20 = ______
4 × 10 = ______
62 − 10 = ______
8 × 10 = ______
82 + 20 = ______
63 − 10 = ______
27 + 20 = ______
57 − 10 = ______
71 + 10 = ______
